21269745

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{67523}}^1$

素因数の和:67541

約数の個数: 24

約数和(自身を含む): 42134976

約数和(自身を除く): 20865231

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 67523, 202569, 337615, 472661, 607707, 1012845, 1417983, 2363305, 3038535, 4253949, 7089915, 21269745]

約数ペア:

[(1, 21269745), (3, 7089915), (5, 4253949), (7, 3038535), (9, 2363305), (15, 1417983), (21, 1012845), (35, 607707), (45, 472661), (63, 337615), (105, 202569), (315, 67523)]